ZIP Code 61840

61840 is one of Illinois's ZIP codes, delivering to addresses in Dewey, Champaign County.

City: Dewey
County: Champaign County
State: Illinois
Prefix: 618xx

Where this code sits

61840 is part of the 618xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Dewey.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61840 delivers to without sharing its boundary.

ZIP codes nearest 61840

The ZIP codes whose reference points sit closest to 61840.
ZIP code	Distance	Delivers to
ZIP code 61843	4.3 mi	Fisher, IL
ZIP code 61866	6.9 mi	Rantoul, IL
ZIP code 61878	7.1 mi	Thomasboro, IL
ZIP code 61845	8.1 mi	Foosland, IL
ZIP code 60949	8.5 mi	Ludlow, IL
ZIP code 61853	10 mi	Mahomet, IL
ZIP code 60933	11 mi	Elliott, IL
ZIP code 60936	11 mi	Gibson City, IL

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 61840, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 61840. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.